Centrifugal machines



(No Model.) 2 sheenssheet 1. J. LIDLW.V GEARING FOR. DRIVING GENTRIPUGAL MACHINES.

,984. Y Patented Aug. 27, 1889I III! '5 i mw@ l `lmllllilllllllllll w GEARING FOR DRIVING GENIIIIFUGAL MACHINES. y No. 409,984. Patented Aug. 27, 1,889.

N. PETERS. PhomLiIhognphnr. washington. D. C.

y UNITED STATES" PATENT OFFICE.

JOHN LAIDLAVV, OF GLASGOW, COUNTIES OF LANARK AND RENFREW,

` SCOTLAND.

GEARING FOR DRIVING CENTRIFUGAL MACHINES` p,

SPECIFICATION f forming part of Letters Patent No. 409,984, dated August 27, i889.` Application filed May 7, 1889. Serial No. 309,948. (No model.) vPatented in England November 24, 1888, No. 17,105.

To all whom it may concern.-

Be it known that I, JOHN LAIDLAW, engineer, of the firm of Watson, Laidlaw & Company, of 9S Dundas Street, Kingston, Glasgow,

in the counties of Lanark and Renfrew` Scotland, have invented a new or Improved Gearing for Driving CentrifugalMachines,of which the following` is a specification.

My invention, which relates io new or imro proved gearing for driving centrifugal inaehines, is more especially applicable to centrifugal machines of asmall type. The new or improved gearing may be driven by hand or power, and the sleeve of the pinion by r 5 which it is driven is carried in a fixed bearing in the frame-work, while the spindle which carries the centrifugal basket passes up loosely through the aforesaid sleeve. On this sleeve there is carried a-disk or arms, into -zo which vertical studs projecting downward are fixed. Upon each of these studs there is carried a pinion, which gears into a fixed circular rack in the lower part of the frame, so that as the aforesaid disk or arms is or are turned round each pinion has at the same time an independent rotation imparted to it by traveling round the said circular rack. Each of the aforesaid pinions has either formed in one piece with it or attached to it 3o a spur-wheel, and the lower part of the spindle of the centrifugal machine has teeth cut in it corresponding to the teeth of the said spur-wheels, so that as the gearing herein described is driven a great and uniform ve- 3 5 locity is imparted to the centrifugal basket.

Proper provision is made for oiling the aforesaid gearing.

Instead of making the vertical studs which carry the spur-pinions and wheels to project 4o downward, as hereinbefore described, they may be made to project upward, and in place of cutting the teeth in the spindle of the machine a pinion may be placed on the spindle; also, in place of using spur-teeth in the gearing, what are known as spiral teeth may be substituted.

Instead of having a pinion and spur-wheel to give motion from circular rack to pinion or spindle, a single wheel may be employed 5o to gear direct from rack to spindle.

It is to be understood that the gearing hereinbefore described is applicable to both vertical and horizon talcentrifugal machines.

In the drawings,` Figure l, Sheet l, shows a vertical, and Fig. 2 a horizontal, section, taken 5 5 I on the line a h, of myimproved gearing when driven by hand. FigB, Sheet 2, shows a vertical section illustrating a modification.

S is the handle of a shaft S3, to which is attached the bevel gear-wheel S', the teeth of 6o which mesh with the teeth of the bevel-pinion S2, attached to the sleeve u. .The sleeve u is supported on the frame of the machineand has the spindle E of the centrifugal machine passing through it.

The sleeve 'ul has formed in one piece with it, or attached to it, adisk or arms u', which carries the spur-pinion u2. This spur-pinion gears into the circular rack n3, attached to the lowerpart of the frame-work V of themachine. 7o As the sleeve u and disk u' makes one revolution roundthe axis,it carries the axis of the spur-pinion u2 round with it. The pinion u2, gearing, as aforesaid, in the circular rack of the framework, rotates at a much greater 7 5,. speed than the sleeve u. Attached to the pinion u2 there is a gear-wheel uffgithe teeth of which mesh with correspondingfteeth in a pinion a5, attached to or formed infthe lower part of the spindle E of the niachine.` 8o

In order to balancel this system of`,.3;ea`ring,`` I attach to the disk or arms u a second and similar set'of wheels diametrically opposite to those already described,asshown in Fig. 2. j

By means of this system ofrdriving-ear above mentioned I obtain about seven thousand revolutions of i the separating-drum per minute to about forty revolutions of the driving-handle.

Instead of driving the said machine by 9o hand, as hereinbefore described with reference to Figs. l and 2, Sheetl, of the annexed drawings, the shaft may have a belt and friction-clutch driving-gear attached to it, and y may be driven by steam Vor other power. This method of driving is shown at Fig. 3, Sheet 2, of the annexed drawings. Upon the boss which carries the shaft S3 there is an ordinary loose pulley d'4, while upon the shaft there is carried loosely a pulley a5, with arms roo or projections a, for carrying the automatic clutches ai. At the outer end of the shaft S3 the clutch-box a8 is keyed. The obj ect of this arrangement is to enable the speed of the '5 centrifugal machine to be gradually brought up to its highest point. As this arrangement is Well understood, it is not necessary to particularly describe it.

Vith a driving-belt for working the cen- Io trifugal machine I can obtain a very much ing pinionu, the sleeve u, having arm u', the gear-Wheel ut, carried by the arm, the Xed circular rack n?, the bevel-pinion S2 on the sleeve, and the shaft having bevel gear-Wheel S', substantially as described.

2. The combination of the spindle E, having pinion 11,5, the sleeve u, having arni u', the pinion u2, and gear-Wheel u, carried by the arm, the fixed circular rack @L3/the bevel-pinion S2 on the sleeve, and the shaft having bevel gear- Wheel S, substantially as described. f

In testimony whereof I have signed my nalne to'this specification in the presence of two subscribing Witnesses.

JOHN LAIDLAIV.

lVitn esses:

JOHN LIDDLE,

ARTHUR HARTLEY TUILE, Bothl of 154 St. Vif/leent Street, Glasgow. 

